Alternativly get a one from another country, I spent several years living in China so got a one when I was there. Several people I know from NZ also keep their original ones to assist with these kinds of matters.

Of course it's illegal to have 2, but so is putting speed camera's in stupid places IMHO. All fair in love n war!!!

I'd love to know how on earth you plan to get a recently deceased relative to sign a statutory declaration saying it was them driving...
Or instead of copping a speeding fine would you prefer to get done for forgery and producing a false stat dec as well?